data_global
_amcsd_formula_title 'O Sn'
loop_
_publ_author_name
'Donaldson J'
'Moser W'
'Simpson W'
_journal_name_full 'Acta Crystallographica'
_journal_volume 16 
_journal_year 1963
_journal_page_first A22
_journal_page_last A22
_publ_section_title
;
 The structure of the red modification of tin(II)oxide
 _cod_database_code 1100020
;
_database_code_amcsd 0018222
_chemical_formula_sum 'Sn O'
_cell_length_a 5.
_cell_length_b 5.72
_cell_length_c 11.12
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 318.032
_exptl_crystal_density_diffrn      5.627
_symmetry_space_group_name_H-M 'C m c 21'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,z'
  '1/2-x,1/2+y,z'
  '-x,-y,1/2+z'
  '1/2-x,1/2-y,1/2+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Sn1   0.00000   0.00000   0.00000
Sn2   0.00000   0.44100   0.25400
O1   0.18000   0.25000   0.38000